CH 11 EKG Flashcards by Rick Aviles

fECGs are useful to evaluate all of the following, except:
a. Impact of lung disease on the heart
b. Pumping ability of the heart
c. Severity of the myocardial infarction
d. Heart rhythm

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What clinical findings are most suggestive of the need for an ECG?
a. Headache and flu-like symptoms
b. Orthopnea and chest pain
c. Fever and cough
d. Joint pain and swelling

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For an adult, what is the normal intrinsic rate of the heart’s primary pacemaker?
a. 90 to 110 beats/min
b. 60 to 100 beats/min
c. 40 to 80 beats/min
d. 40 to 60 beats/min

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What is the normal intrinsic rate of the heart’s secondary pacemaker?
a. 80 to 100 beats/min
b. 60 to 100 beats/min
c. 40 to 60 beats/min
d. 30 to 40 beats/min

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What does the P wave on the ECG recording represent?
a. Atrial depolarization
b. Atrial repolarization
c. Ventricular depolarization
d. Ventricular repolarization

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What does the QRS wave on the ECG recording represent?
a. Atrial depolarization
b. Atrial repolarization
c. Ventricular depolarization
d. Ventricular repolarization

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What does the T wave on the ECG recording represent?
a. Atrial depolarization
b. Atrial repolarization
c. Ventricular depolarization
d. Ventricular repolarization

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Which of the following is within the normal range for a PR interval?
a. 0.10 second
b. 0.20 second
c. 0.30 second
d. 0.40 second

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What is the upper limit of a normal QRS complex?
a. <0.04 second
b. <0.08 second
c. <0.10 second
d. <0.16 second

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The QRS complexes are equally spaced with three large boxes between each complex. What is the heart rate?
a. 150 beats/min
b. 100 beats/min
c. 75 beats/min
d. 60 beats/min

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A prolonged PR interval is indicative of which of the following?
a. Sinus dysrhythmia
b. Sinus bradycardia
c. Sinus block
d. AV block

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An early, widened QRS complex with an inverted
T wave and no associated P wave is consistent with which of the following?
a. PVC
b. Ventricular tachycardia
c. Ventricular fibrillation
d. Ventricular asystole

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What ECG finding is suggestive of an acute myocardial infarction?
a. Prolonged PR intervals
b. Elevated ST segments
c. Tall, peaked T waves
d. Narrow QRS complexes

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What ECG finding is suggestive of cor pulmonale?
a. Inverted T waves
b. Elevated ST segments
c. Right-axis deviation
d. Small QRS complexes

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Which of the following statements is true regarding
sinus tachycardia?
a. It is caused by parasympathetic stimulation
b. It may be caused by a vasovagal response
c. It is a meaningless clinical finding
d. It may be caused by fever, fear, or pain

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For a patient experiencing severe chest pain and other acute cardiac symptoms, the immediate role of the RT is to do which of the following?
a. Call the respiratory care supervisor
b. Help ensure that a stat ECG is quickly obtained
c. Administer a bronchodilator
d. Notify the nurse and doctor and be ready to assist the cardiac arrest team

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Rate:80beats/min
Rhythm: underlying rhythm is regular but irregular with PVCs
P wave: normal
PR interval: less than 0.2 second
QRS: less than 0.10 second
Interpretation: sinus rhythm with ST-segment elevation and multifocal PVCs

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Rate: 60 beats/min
Rhythm: regular
P wave: absent
PR interval: absent
QRS: greater than 0.10 second
Interpretation: accelerated idioventricular rhythm

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Rate: 180 beats/min
Rhythm: regular
P wave: normal, combined with T wave
PR interval: less than 0.2 second
QRS: less than 0.10 second
Interpretation: atrial tachycardia or supraventricular tachycardia

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Rate: 80 beats/min
Rhythm: regular
P wave: normal
PR interval: less than 0.2 second
QRS: less than 0.10 second
Interpretation: normal sinus rhythm with ST-segment depression

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Rate:80beats/min
Rhythm: regular
P wave: sawtooth, more than one per QRS complex, flutter waves
PR interval: not measurable
QRS: less than 0.10 second
Interpretation: atrial flutter

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Rate: 80 beats/min
Rhythm: irregular
P wave: changing configuration, more than one per QRS complex, fibrillatory waves
PR interval: not measurable
QRS: less than 0.10 second
Interpretation: atrial fibrillation

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Rate: not measurable
Rhythm: irregular
P wave: none
PR interval: none
QRS: chaotic, irregular waves
Interpretation: ventricular fibrillatioN

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Rate: 160 beats/min
Rhythm: regular
P wave: none
PR interval: none
QRS: greater than 0.10 second
Interpretation: ventricular tachycardia

Rate: 80 beats/min Rhythm: underlying rhythm is regular but irregular with PVCs P wave: normal PR interval: less than 0.2 second QRS: less than 0.10 second Interpretation: junctional rhythm with ST-segment eleva- tion and unifocal PVCs

Rate: 60 beats/min Rhythm: regular P wave: normal PR interval: greater than 0.2 second QRS: less than 0.10 second Interpretation: first-degree AV block with ST-segment depression

TRUE/FALSE When dealing with EKG interpretation, you should always avoid shortcuts and assumptions because often a quick glance at a strip will lead to an incorrect interpretation

The intrinsic firing rate of the AV node is ____bpm A. 15-25 B. 25-35 C. 35-45 D. 40-6O

TRUE/FALSE You must master the accepted parameters for each dysrhythmia and then apply those parameters to each of the five steps when analyzing an EKG strip

The EKG is used to A. Determine pulse rate B. Detect valvular dysfunction C. Evaluate electrical activity in the heart D. Determine whether the heart is beating

The PR interval should normally be ___seconds or smaller A. 0.10 B. 0.12 C. 0.18 D 0.20

The QRS interval should normally be ___seconds or smaller A. 0.20 B. 0.12 C. 0.18 D 0.36

TRUE/ FALSE Artifact is defined as EKG waveforms from sources outside the heart

causes of artifact include A.patient movement B. looses electrodes C. improper grounding D. All the above apply

True/False the term supra-ventricular refers to a stimulus arising above the ventricles

The T wave on the EKG strip represents A. Rest period B. Bundle of his C. Atrial Contraction D. Ventricular contraction

When interpreting dysrhythmias remember that the most important key is the A. PR interval B. Rate and rhythm C. Presence of dysrhythmias D. Patient's clinical appearance

TRUE/FALSE The health care professional should read EVERY EKG strip from left to right starting at the beginning of the strip?

TRUE/FALSE the sharp, negative deflection that follows the R wave is called the Q wave

TRUE/FALSE heart rhythms are classified as either regular or irregular

The point at which the QRS complex meets the ST segments is commonly referred to as the: A. T point B. J point C. PRI D. S point

CH 11 EKG Flashcards

(41 cards)